我试图找到与mysql相关的这个问题的答案：说一个数据库hello-there，那么它的文件夹表示是：hello@002dthere
正如mysql帮助所说：http ://dev.mysql.com/doc/refman/5.5/en/identifier-mapping.html
All nonletter characters except underscore (_), as well as letters from alphabets
that do not have uppercase/lowercase mapping (such as Hebrew) are encoded using
hexadecimal representation using lowercase letters for hex digits a..f:
0x003F -> @003f
0xFFFF -> @ffff
The hexadecimal values correspond to character values in the ucs2 double-byte
character set.
有没有办法找到我在 mysql 客户端发出的相应文件夹名称，例如显示数据库；有人可能会争辩：分析数据库名称并将任何非字母数字转换为 ucs2，但这是性能杀手：
mysql> select hex('-');
+----------+
| hex('-') |
+----------+
| 2D |
+----------+
谢谢...